When I look at the HTML document of the application, the calculated field (with the calculator next to it) is blank.
The calculated fields, the ones with the calculators next to them, are run in the code on the fly. The calculations are not done in the application xml or HTML, however, they will display correctly in the Request and on the Reviewer Portal.
There is an IDEA created for this on our Community Page. Please go out and vote for it. The more votes an IDEA receives, the more traction it will gain with our Product Managers.